Category Archives: Political Polarization

Voters’ Ideological Perceptions of 2014 Senate Candidates

In this post we use Bayesian Aldrich-McKelvey scaling to analyze voters’ perceptions of the ideological positions of Senators and Senate candidates who will be running in close races in 2014 (we also describe the Bayesian Aldrich-McKelvey scaling method in our … Continue reading

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An Update on the Presidential Square Wave through 2013

Below we plot the first dimension DW-NOMINATE Common Space scores of the presidents in the post-war period, which we refer to as the “presidential square wave” due to its shape. An ideological score is estimated for each president throughout the … Continue reading

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DW-NOMINATE Video, 1789-2013

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Posted in American Political History, Political Polarization | Leave a comment

An Update on Polarization through the First Year of the 113th Congress (Part II)

Note: Raw data and additional graphs tracking congressional polarization can be found at: http://voteview.com/political_polarization.asp. In our earlier post, we showed that polarization between the parties in Congress continued to rise through 2013: setting new records in both chambers. One natural … Continue reading

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Political Polarization and Income Inequality

Two topics that will likely get a lot of attention in President Obama’s State of the Union address are gridlock and income inequality. In this post, we detail how trends in income inequality and political polarization are strongly intertwined with … Continue reading

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An Update on Polarization through the First Year of the 113th Congress (Part I)

Note: Raw data and additional graphs tracking congressional polarization can be found at: http://voteview.com/political_polarization.asp. Now that 2013 — the first year of the 113th Congress — has wrapped up and all 640 roll call votes in the House and 291 … Continue reading

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The Shutdown: Boehner vs. Gingrich

Below we use DW-NOMINATE scores to compare the ideological makeup of the House Republican Caucus under Speaker Newt Gingrich (R-GA) during the 1995/1996 government shutdown and the current one headed by Speaker John Boehner (R-OH). Thad Hall has also compared … Continue reading

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Polarization in the 113th Congress and among 2016 Presidential Contenders

Below we use DW-NOMINATE Common Space scores, updated through the August recess of the 113th Congress, to show the ideological dispersion of the parties in Congress and plot the ideological positions of some of the potential 2016 presidential candidates who … Continue reading

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An Update on Polarization through the 113th Congress (Part II)

Below we use DW-NOMINATE scores updated through the August recess of the 113th Congress to plot the mean first dimension (liberal-conservative) scores of Republicans and Democrats and the difference in these party means over time. We previously looked at the … Continue reading

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An Update on Polarization through the 113th Congress

Below we use DW-NOMINATE scores updated through the August recess of the 113th Congress to plot the mean first dimension (liberal-conservative) scores of Republicans and Democrats and the difference in these party means over time. Using the difference of party … Continue reading

Posted in 113th Congress, Political Polarization | Leave a comment